US5933544A - Depiction of images using inverse perspective transformation to provide 3-D effect - Google Patents

Depiction of images using inverse perspective transformation to provide 3-D effect Download PDF

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Publication number
US5933544A
US5933544A US08/886,420 US88642097A US5933544A US 5933544 A US5933544 A US 5933544A US 88642097 A US88642097 A US 88642097A US 5933544 A US5933544 A US 5933544A
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United States
Prior art keywords
image
coordinates
ground surface
camera
line
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US08/886,420
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English (en)
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Michael John Walter Brown
Michael John Merifield
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THREE-D-SIGNS INTERNATIONAL Ltd
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Individual
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Priority to US08/886,420 priority Critical patent/US5933544A/en
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Publication of US5933544A publication Critical patent/US5933544A/en
Assigned to THREE-D SIGNS (PTY) LIMITED reassignment THREE-D SIGNS (PTY) LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROWN, MICHAEL JOHN WALTER, MERIFIELD, MICHAEL JOHN
Assigned to THREE-D-SIGNS INTERNATIONAL LIMITED reassignment THREE-D-SIGNS INTERNATIONAL LIMITED NUNC PRO TUNC ASSIGNMENT (SEE DOCUMENT FOR DETAILS). Assignors: THREE-D-SIGNS (PTY) LIMITED
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/2628—Alteration of picture size, shape, position or orientation, e.g. zooming, rotation, rolling, perspective, translation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/30—Transforming light or analogous information into electric information
    • H04N5/33—Transforming infrared radiation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/20—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from infrared radiation only

Definitions

  • This invention relates to the depiction of images. More particularly, but not exclusively, it relates to the depiction of images of an advertising or promotional nature, at sporting events.
  • a method of depicting an image which includes applying an inverse perspective transformation of the image to a surface, and imaging the surface, with the transformed image depicted thereon, by means of a moving picture camera whose line of sight corresponds to the line of sight used in transforming the image to its inverse perspective form.
  • points on anyone of these lines that would, in three-dimensional space, be spaced at equal intervals along the line are, in the depiction, represented as points which are spaced at intervals which become progressively smaller, the greater the distance of the points, in three-dimensional space, from the observer.
  • the spacing between adjacent points tends to zero as the distance, in three-dimensional space, from the observer tends to infinity.
  • the observer When viewing such a perspective depiction, the observer, by a process of visual or mental interpretation, visualises the converging lines as being parallel to one another in a plane extending away from the observer, and the points as being equi-distant from one another. This is so even though the surface on which the image is depicted may be at right angles to the line of sight of the observer.
  • an inverse perspective transformation of an image is meant a transformation of the image which is such that, when the transformed image is viewed by an observer from a position in which the line of sight of the observer intersects the surface to which the image is applied at a small angle, the observer, by a process of mental or visual interpretation, visualises the transformed image as extending in a plane extending at an angle (eg right angles) greater than said small angle to the line of sight of the observer.
  • the image may be of an advertising or promotional nature.
  • a method of depicting an image which is of an advertising or promotional nature which includes applying an inverse perspective transformation of the image to a surface.
  • the output of the camera may be broadcast or diffused in a television broadcasting or diffusion service.
  • the surface may be a playing surface or field for a sporting event.
  • FIG. 1 is a side view illustrating the principles of the invention
  • FIG. 2 illustrates a perspective grid and, superimposed thereon, a rectangular window in a focal plane extending at right angles to an observer's line of sight;
  • FIG. 3 illustrates the window after inverse perspective transformation thereof
  • FIG. 4 is a diagrammatic side and plan view, to show the symbols used in the mathematical equations used in the inverse perspective transformation of an image from a focal plane to a ground plane.
  • reference numeral 10 designates a ground surface and reference numeral 12 a video camera whose line of sight 14 extends at a small angle ⁇ to the ground surface.
  • Reference numeral 16 designates an imaginary focal plane of the video camera, which extends at right angles to the line of sight 14, at a point P (the focal point) where the line of sight intersects the ground surface 10.
  • the video camera 12 is positioned at a height H above the ground plane and at a horizontal distance L from the focal point P.
  • line ABCD indicates a rectangular window in the focal plane 16, the window having the focal point P at its centre.
  • the window ABCD is superimposed on a perspective grid consisting of lines 18 and 20.
  • the lines 18 and 20 represent lines that, in the ground plane 10, form a regular rectangular grid.
  • the lines 18 thus converge to a vanishing point (not shown) on a horizontal line or "horizon" 22.
  • the window ABCD becomes an elongated quadrilateral window having parallel sides BC and AD and diverging sides BA and CD.
  • This transformation is herein referred to as an inverse perspective transformation.
  • the same transformation can be applied to any design represented in the focal plane 16 in the window ABCD.
  • a point at BX, BY in the focal plane 16 corresponds to a point at GX, GY in the ground plane 10, such that: ##EQU1##
  • An image which may be of an advertising or promotional nature, is transformed from focal plane co-ordinates to ground plane co-ordinates by an inverse perspective transformation as described above. It will be appreciated that this can readily be done by means of a computer. The transformed image is then applied to the ground surface 10.
  • the transformed image may be applied to the surface by means of chalk or the like marking material.
  • TV coverage of the sporting event will cause the image to be displayed on the TV screen of every person watching the sporting event on TV.
  • the observer will, by a process of mental or visual interpretation, visualise the image on his TV screen in the form the image had prior to the inverse perspective transformation and the image will thus appear to be in a plane at right angles to the observer's line of vision. This will cause the image to stand out, increasing its impact on the TV audience.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Marketing (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • Studio Circuits (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Input (AREA)
  • Television Systems (AREA)
  • Image Processing (AREA)
  • Stereoscopic And Panoramic Photography (AREA)
  • Processing Or Creating Images (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Adjustment Of Camera Lenses (AREA)
  • Toys (AREA)
  • Pinball Game Machines (AREA)
  • Packaging Of Special Articles (AREA)
US08/886,420 1991-08-23 1997-07-01 Depiction of images using inverse perspective transformation to provide 3-D effect Expired - Lifetime US5933544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US08/886,420 US5933544A (en) 1991-08-23 1997-07-01 Depiction of images using inverse perspective transformation to provide 3-D effect

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
ZA91/6712 1991-08-23
ZA916712A ZA916712B (en) 1991-08-23 1991-08-23 Depiction of images
US63275796A 1996-04-16 1996-04-16
US73697596A 1996-10-25 1996-10-25
US08/886,420 US5933544A (en) 1991-08-23 1997-07-01 Depiction of images using inverse perspective transformation to provide 3-D effect

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US73697596A Continuation 1991-08-23 1996-10-25

Publications (1)

Publication Number Publication Date
US5933544A true US5933544A (en) 1999-08-03

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US08/886,420 Expired - Lifetime US5933544A (en) 1991-08-23 1997-07-01 Depiction of images using inverse perspective transformation to provide 3-D effect

Country Status (12)

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US (1) US5933544A (es)
EP (1) EP0599920B2 (es)
JP (1) JP3320415B2 (es)
AT (1) ATE175832T1 (es)
CA (1) CA2116096C (es)
DE (2) DE69228187T3 (es)
DK (1) DK0599920T4 (es)
ES (1) ES2125904T5 (es)
GR (1) GR3029921T3 (es)
HK (1) HK1014622A1 (es)
WO (1) WO1993004559A1 (es)
ZA (1) ZA916712B (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050266921A1 (en) * 2004-05-11 2005-12-01 Yasuhiro Hayashida Image processing program, game processing program and game information processing apparatus
US20060202272A1 (en) * 2005-03-11 2006-09-14 Cree, Inc. Wide bandgap transistors with gate-source field plates
US20070059098A1 (en) * 2002-03-25 2007-03-15 Ian Mayfield Automatic ground marking method and apparatus
CN101559773B (zh) * 2006-12-12 2011-11-30 财团法人工业技术研究院 影像撷取装置位置的自动侦测方法与车辆碰撞警示系统
US20120212755A1 (en) * 2009-10-21 2012-08-23 Xavier De Los Aires Alvarez Method, System and Computer Program for Obtaining the Transformation of an Image
EP2806404A1 (en) * 2013-05-23 2014-11-26 AIM Sport AG Image conversion for signage
US20150160539A1 (en) * 2013-12-09 2015-06-11 Geo Semiconductor Inc. System and method for automated test-pattern-free projection calibration

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2114819B1 (es) * 1996-05-30 1999-02-16 Market Sp 94 S L Metodo para la visualizacion a distancia de paneles publicitarios y similares desde una camara para la captacion de imagenes.
DK9700140U3 (da) 1997-03-25 2000-03-24 Logo Paint Figurativt tryk på en plan trykbærer og anvendelse af sådant figurativt tryk
DE19837887B4 (de) * 1998-08-20 2011-06-16 Apa Adelfang & Parbel Gmbh & Co. Kg Verfahren zum Ermitteln von Form und Maßen eines zweidimensionalen, perspektivisch verzerrten Abbildes eines dreidimensional fest definierten Ursprungselementes
ES2152182B1 (es) * 1999-04-15 2001-08-16 Market Sp 94 S L Procedimiento para la creacion de vallas publicitarias virtuales en campos de deportes y similares y soporte para su realizacion.
US20040035030A1 (en) * 2002-08-22 2004-02-26 Christian Sondergaard Advertisement print optimised for a viewer having two viewpoints
DE60228456D1 (de) * 2002-11-06 2008-10-02 Lp Holding Aps Herstellungsverfahren für ein Werbeplakat
WO2005117419A1 (en) * 2004-11-24 2005-12-08 Ata Reklam Ve Tanitim Sanayi Dis Ticaret Anonim Sirketi System of displaying imaginary objects via digital projection coloring method
DE202012010931U1 (de) 2012-11-14 2013-01-08 Joerg Privsek Led-cam-carpet
ES2528303B1 (es) * 2014-07-22 2015-11-13 Livead Space Mark Up, S.L. Dispositivo publicitario plano y su uso en un recinto deportivo
ES2596534B1 (es) * 2015-07-06 2017-04-21 Market Sp'94, S.L. Procedimiento para inclusión de motivos publicitarios mediante un procesador de imágenes
JP2018005760A (ja) * 2016-07-07 2018-01-11 株式会社リコー 表示装置、表示方法、及びプログラム

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US3631619A (en) * 1967-06-29 1972-01-04 Samuel Scrivener Jr Overhead traffic informational or directional sign
US4343637A (en) * 1980-08-15 1982-08-10 Owens-Corning Fiberglas Corporation Method and apparatus for monitoring the diameter of fibers
US4667236A (en) * 1985-04-26 1987-05-19 Digital Services Corporation Television perspective effects system
EP0259549A2 (en) * 1986-09-03 1988-03-16 International Business Machines Corporation Method of and system for generating images of object transforms
US4841292A (en) * 1986-08-11 1989-06-20 Allied-Signal Inc. Third dimension pop up generation from a two-dimensional transformed image display
US4956706A (en) * 1988-06-21 1990-09-11 Sony Corporation Apparatus for processing image
US5283859A (en) * 1986-09-03 1994-02-01 International Business Machines Corporation Method of and system for generating images of object transforms

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US3631619A (en) * 1967-06-29 1972-01-04 Samuel Scrivener Jr Overhead traffic informational or directional sign
US4343637A (en) * 1980-08-15 1982-08-10 Owens-Corning Fiberglas Corporation Method and apparatus for monitoring the diameter of fibers
US4667236A (en) * 1985-04-26 1987-05-19 Digital Services Corporation Television perspective effects system
US4841292A (en) * 1986-08-11 1989-06-20 Allied-Signal Inc. Third dimension pop up generation from a two-dimensional transformed image display
EP0259549A2 (en) * 1986-09-03 1988-03-16 International Business Machines Corporation Method of and system for generating images of object transforms
US5283859A (en) * 1986-09-03 1994-02-01 International Business Machines Corporation Method of and system for generating images of object transforms
US4956706A (en) * 1988-06-21 1990-09-11 Sony Corporation Apparatus for processing image

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Article entitled "Fun-Fair Illusions" in Time Magazine, dated Oct. 4, 1976, pp. 42 and 43.
Article entitled Fun Fair Illusions in Time Magazine, dated Oct. 4, 1976, pp. 42 and 43. *
Foley et al, "Computer Graphics . . . " 1990 pp. 657-660.
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070059098A1 (en) * 2002-03-25 2007-03-15 Ian Mayfield Automatic ground marking method and apparatus
US20050266921A1 (en) * 2004-05-11 2005-12-01 Yasuhiro Hayashida Image processing program, game processing program and game information processing apparatus
US20060202272A1 (en) * 2005-03-11 2006-09-14 Cree, Inc. Wide bandgap transistors with gate-source field plates
CN101559773B (zh) * 2006-12-12 2011-11-30 财团法人工业技术研究院 影像撷取装置位置的自动侦测方法与车辆碰撞警示系统
US20120212755A1 (en) * 2009-10-21 2012-08-23 Xavier De Los Aires Alvarez Method, System and Computer Program for Obtaining the Transformation of an Image
US9041715B2 (en) * 2009-10-21 2015-05-26 Mk Virtual Advertising, S.L. Method, system and computer program for obtaining the transformation of an image
WO2014187695A1 (en) * 2013-05-23 2014-11-27 Aim Sport Ag Image conversion for signage
EP2806404A1 (en) * 2013-05-23 2014-11-26 AIM Sport AG Image conversion for signage
US20160217604A1 (en) * 2013-05-23 2016-07-28 Aim Sport Ag Image conversion for signage
US10482652B2 (en) * 2013-05-23 2019-11-19 Aim Sport Ag Image conversion for signage
US20150160539A1 (en) * 2013-12-09 2015-06-11 Geo Semiconductor Inc. System and method for automated test-pattern-free projection calibration
US9915857B2 (en) * 2013-12-09 2018-03-13 Geo Semiconductor Inc. System and method for automated test-pattern-free projection calibration
US20180196336A1 (en) * 2013-12-09 2018-07-12 Geo Semiconductor Inc. System and method for automated test-pattern-free projection calibration
US10901309B2 (en) * 2013-12-09 2021-01-26 Geo Semiconductor Inc. System and method for automated test-pattern-free projection calibration

Also Published As

Publication number Publication date
DE69228187D1 (de) 1999-02-25
DE9219218U1 (de) 2000-08-03
DE69228187T2 (de) 1999-07-29
WO1993004559A1 (en) 1993-03-04
EP0599920B2 (en) 2005-09-21
HK1014622A1 (en) 1999-09-30
DE69228187T3 (de) 2006-06-01
EP0599920B1 (en) 1999-01-13
AU2121692A (en) 1993-02-25
DK0599920T4 (da) 2005-12-27
EP0599920A1 (en) 1994-06-08
CA2116096A1 (en) 1993-03-04
JPH07508374A (ja) 1995-09-14
ATE175832T1 (de) 1999-01-15
ES2125904T5 (es) 2005-12-16
ZA916712B (en) 1992-05-27
CA2116096C (en) 2000-11-14
AU656609B2 (en) 1995-02-09
DK0599920T3 (da) 1999-08-30
JP3320415B2 (ja) 2002-09-03
ES2125904T3 (es) 1999-03-16
GR3029921T3 (en) 1999-07-30

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